supply of refrigerant gas r 407c crefrigerant gas r 407c c,refrigerant gas r 407c conforming to is : 15548/2005 or latest in returnable cylinder having the capacity of 45 kgs gas, refrigeration gas r-407c comprising with 23% of r-32, 25% of r-125 & 52% of r-134a in cylinder of 45 kgs each having chemical name difluoro methane penta fluoro ethane1,1,1,2- tetr a fluoro ethane and chemical formula ch2f2/cf3-chf2/cf-3-ch2f suitable for ac rmpu coaches refrigeran t gas r 407c filled in company sealed refrigerant cylinder of 45 kg capacity each, engrooved net weight of the refrigerant gas, gross weight and date of filling of refrigerant gas with cylinder gross weight at cylinder. the firm has to submit test certificate at the time of delivery. [ warranty period: 30 months after the dat e of delivery ] ]